class ActionView::AbstractRenderer::RenderedCollection

def self.empty(format)
  EmptyCollection.new format
end

def body
  @rendered_templates.map(&:body).join(@spacer.body).html_safe
end

def format
  rendered_templates.first.format
end

def initialize(rendered_templates, spacer)
  @rendered_templates = rendered_templates
  @spacer = spacer
end